A Case for Mid-frequency Amplification?

Most individuals with hearing loss are affected mostly in the high frequencies. And, because consonants–those phonemes (distinctive speech sounds) that are believed to enable humans to differentiate one word from another–are high-frequency sounds, hearing aid fitting formulas universally call for high-frequency amplification. This continues to be a take-off of the old “audiogram fitting” approach (although with less…

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PSAPs – In Defense Of – Part I

Editor’s comment:  Discussions of hearing aids versus PSAPs (Personal Sound Amplification Products) have heated up again since the FDA (Food and Drug Administration) issued its Draft Guidance for Industry and Food and Drug Administration Staff on November 7, 2013.  The Guidance Document was distributed for comment purposes only, and rapidly became a lightening rod for…

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